Biscuit cutting and embossing machine



Dec. 9, 1930. "r. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE Filed April 8, 1929 s Sheets-Sheet 1 IN VENT OR I A TTORNEY 1930- T. L. GREEN BISCUIT CUTTING AND EMBOSSING MACHINE Filed April 8, 1929 6 Sheets-Sheet 2 ATTORNEY mag Dec. 9, 1930.. GREEN 1,784,431

BISCUIT GUTTING AND EMBQSSING MACHINE Filed April 8. 1929 6 Sheets-Sheet 3 iii; 3

@1166 m. {$7 $55 1MP A TTORNE Y Dec. 9, 1930. T. L. GREEN 1,784,431

BISCUIT CUTTING AND EMBOSSING MACHINE Filed April 8, 1929 6 Sheets-Sheet 4 IN VEN TOR I MWM A TT ORNE Y Dec. 9, 1930. 1'. L. GREEN 1,734,431

BISCUIT CUTTING AND EMBOSSING MACHINE Filed April 8, 1929 s Sheets-Sheet S J W M H I W/I//fifi m mm m mflm I I 7% lll V 1. a '7, v mllmfw/fi .V. a n l W 1 I 11H. x T. n 5 5 8 I x x. WW 4 a 1 a 5 a H g k m J P I 0 1 H w w a 13 F 1 F F x XV m 3 1 a; p m P g 4 3 m x fi a V I NT 1 r/ T1 1 MW "J". 1 1 I? m w III Dec. 9, 1930, 1-. L. GREEN 1,784,431

BISCUIT CUTTING AND EMBQSSING MACHINE Filed April 8, 1929 6 Sheets-Sheet 6 I INVENTOR.

ATTORNEY Patented Dec. 9, 1930 THOMAS LUTHER- GREEN, OF INDIANAPOLIS, INDIANA.

BISCUIT CUTTING AND EMBOSSING MACHINE Application filed April 8, 1929. Serial No. 353,5?1-

The invention to be hereinafter described relates to a machine for cutting and embossing biscuits, and is an improvement upon the machine disclosed in Letters Patent No.

5 1,660,553, granted to me February 28, 1928.

In said machine a sheet of dough or other plastic material is fed by an endless web or apron beneath vertically reciprocating cutters and embossers .mounted on a carrier,

which in the case of a continuously fed apron is. reciprocated so that the cutters and em bossers are moved in unison with the travel of the sheet when acting thereon.

In said machine a cross-head reciprocates vertically on the carrier, and detachably connected with said cross-head is a unit comprising a cutter-head carrying cup-shaped cutters, an embosser-head carrying embossers which are within the cutters, and a clearer plate. The embosser-head is supported on the clearer plate by coil springs encircling studs mounted on and projecting up from the clearer plate, and having heads at the upper ends thereof, the construction being such that the coil springs urge the embosserhead upward from the plate until limited by engagement of the embosser-head with the stud heads. The clearer plate is carried. by the cutter-head, and is provided with studs rising from the clearer plate and having heads at the upperends thereof. Coil springs encircle these studs and urge the clearer plate downward relatively to the cutter-head until limited by engagement of the stud heads with the cutter-head.

In said machine on downward movement of the cross-head toward the apron, the clearer plate engages and is arrested by stops adjacent opposite edges of the apron. The cross-head carries toggles having shoes at the lower ends thereof adapted to engage the embosser-head, so that on arrest ofthe clearer plate and continued downward movement of the cross-head, the shoes engage the embosserhead and press the same downward against the opposition of the coil springs which are interposed between the clearer plate and the embosser-head, thereby energizing said springs. The instant the emfibossers have made their impress upon the dough sheet,

the toggles are buckled and the energized springs become effective quickly to move the embossers up away from the dough sheet.

To intermittently buckle the toggles and re lease the shoes from the embosser-head, a

latch trip mechanism was employed, which was a good operable means, but objectionable vibration, noise and wear were occasioned thereby.

One of the purposes of the present invention, therefore, is to provide improved means for controlling the toggles. This means, in the present instance of the invention comprises a pair of eccentrics located within the cross-head, and connected to the hinge pins of the toggles by connecting rods. The eccentrics are given an oscillatory motion for alternately buckling and approximately straightening the toggles. A highly desirable eifective means is provided for imparting this oscillatory motion to the eccentrics, the construction being such that the eccentrics receive a high speed rocking movement to quickly buckle the toggles and snatch the shoes up, and allow lifting of the embossers by the embosser-head springs. theinstant the embossers have made their impress on the dough sheet.

The character of the invention may be best understood by reference to the following description of one good embodiment thereof shown in the accompanying drawings, wherein: p

Fig. 1 is a front elevation of a portion of a biscuit cutting and embossing machine embodying the invention;

Fig. 2 is avertical transverse section through the machine showing the cross-head, cutter and embosser unit and other parts in side elevation;

Fig. 3 is a plan of the cross-head, and shows the devices for alining the cross-head with the bed plate and for adjusting the toggles and their shoes for embossing dough sheets of varying thickness, and for making impressions of varying depth thereon;

Fig. 4 on an enlarged scale is a transverse section taken on line44 of Fig. 3;

Fig. 5 on an enlarged scale is a transverse section taken'on line 55 of Fig. 3;

Fig. 6 is an elevation showing the mechanism for oscillating'themitre gears, rock shafts and eccentrics; I v I Fig. 7 is a plan of an end portion of the cross-head showing one of its eccentric adusting sleeves in section, and showing the racketcarr ing part of the mechanism for oscillating t e mitre gear shafts";

r Fig.8 is an elevation of the portion of the cross-head shown in Fig. 7, and a vertical sectionthrough the eccentric sleeve and bracket; v

Fig- 9 1s a vertical transverse section through the unit comprising the head car- 7 rying the cutters, the head carrying the embossers,-the clearer plate and coil springs atone end of the unit; I

Fig. 10 on an enlarged scale is a vertical section through the cross-head box and showring the positions of the eccentrics, connecting rods'and toggles when the-latter are in approximately straightened condition; I

Fig. 11 is a iew similar to Fig. 10 showing the positions of the eccentrics, connect ng rodsand toggles when the latter are in buck led condition;

Fig. 11a is'a View of the two eccentrics;

I and Figs.,12, 13 and 14 are diagrammatic views to facilitate understanding of the operation of the embosser control mechanism,and include the :crank arrangement whereby high speed motion is imparted to the eccentrics at the stagein their cycle in which they function quickly to release the embossers to the lifting actionof their springs. f

Referring to the drawings, the portionof the biscuit cutting and embossing machine shown therein as one good form of the invention, comprises a pair of side plates 1 (F igs 1 and 2) which extendthe length of the machine and carry the usual rollers-and driving mechanism (not shown) forcausing the travel of the endless apron 3, the upper run of which conveys the dough sheet beneath cutters and embossers. Cutters 5 (Figs. 2 and 9) are providechiin the present instance of cup form. Within the cutters are embossers 7, in the present instance ofplunger form. The cutters are secured'to achannel-shaped cutter-head 9 provided with a'pairof yokes 11 bridging the flanges'of the channel-shaped cutter-head adj aceiit opposite ends thereof. The embossers are secured't'o the lower ends of stems 13'which are entered through holes in the hottom of the cutter-head, the upper ends of :said stems being secured to a channel-shaped embosser-head 15 slidable vertically'between the flanges of the channel-shaped cutter-head.

Beneath the cutter head is a clearer plate 17 having "holes for receiving the cutters.

, Secured" to and rising from the clearer plate are studs. 19 which pass through pockets 21 in the cutter head, and have at the upper ends thereof heads Coil springs 25 encircle the studs, enter the pockets, are confined beo tween the clearer plate and the upper ends of the pockets, and urge the clearer plate 1 downward until limited by engagement of the stud heads 23 with the upper surfaces of the cutter-head flanges.

The embosser-head is supported by the clearer plate, and to accomplish this, studs 27 are provided having their lower ends secured to the clearer plate. These studs rise up therefrom, pass through holes in the bottom of the cutter-head, through pockets 29 in the embosser-head, and have heads 31 at the upper ends thereof. Coil springs 33 encircle these studs, enter the pockets, are confined between the clearer plateand the uppr ends of the pockets,and urge the embosser-head upward away from the clearer plate until limited by enga ement of the upper surfaces c of the flanges o. the channel-shaped embosser-head with the stud heads 31. i

The cutter carrying head, the embosser" carrying head, the clearer plate and thestuds and ,springs described constitute a unit adapted to be detachably secured tov a crosshead 35 (Figs. 2 and 3). To accomplish this,

bolts 37 are provided extending verticallythrough the cross-head, and havingat their lower ends heads 39 entered into horizontah slots 41 inthe cutter-head yokesll referred V to, said bolts having nuts 43 engaging the top ofthe cross-head. The construction issuch that the unit may be presented to the crosshead and adjusted laterally to cause the slots 41 to slide along thebolt heads 39 until limited byengagement of the ends of. the slots with the bolts. Thereupomthe nuts 43 may be tightened securely to connect the unit to the .cross head; The machine may be equipped with acomplement of cutter and elnbossei' units for work of varying character, the

coi'istructionbeing such that one unit may be quickly and easilysubstituted for another.

whichis reciprocable in a horizontal direction, in order that'the cutters and embossers may be moved in unison with the continuously travelling apron and dough sheet while acting on the latter. This carrier comprises Y The ci-oss-l' ead is mounted on a carrier 2;;

pairsof rocker arms 45 (Figs. 1 and 2) at opposite sides of the machine and adapted to oscillate with parallel motion about the axes of shafts 47 mounted on the side plates of the machine. The upper ends of the rocker arms are mounted in deep. cups6l, have upper ends engaging the cross-head, and yieldingly support the latter.

To reciprocate the cross-head in the guideways of the stands, connecting rods 63 (Figs.

1 and 2) are provided having heads 65 connected to the cross-head, and heads 67 provided with straps receiving orankwrist pins 69 on main shaft- 71 journalled in bearings in the side plates and driven in any suitable manner. Ball bearings 73 are provided between the straps and wrist pins.

The means for horizontally reciprocating the cutter and embosser carrier comprises a disk 75 mounted on the front end of the main shaft 71 and having a wrist pin 77 connected by a connecting rod 79' with the lower end of one of a pair of rocker arms 81 mounted on a shaft 83. On the upper ends of the rocker arms are blocks 85 connected by links 87 with the saddle 4-9. The extent of oscillation of the cutter and embosser carrier may be varied by adjusting the blocks 85 along the rocker arms by means of a hand wheel 89 operating through mitre gears and screws 91 as is understood in the art.

It is desirable to adjust the cross-head in order that it may be properly alined with respect to the bed plate and the dough sheet. To accomplish this,-eccentric sleeves 93 (Figs. 6, 7 and 8) are interposed between the trunnions 95 of the cross-head and bearings 97 in the upper connecting rod heads 65. Formed integrally with the eccentric sleeves are worm gears 99 (Figs. 3 and 7) meshing with worms 101 on short shafts 103 journalled in bearings in the upper connecting rod heads 65. Fast on said short shafts are worm gears 105 meshing with worms 107, one on a sleeve shaft 109 journalled in bearings in brackets 111 projecting from the upper connecting rod head 65, and the other on a shaft 113 in the sleeve shaft. East on the sleeve shaft 109 is. a hand wheel 115, and fast on the shaft 113 is a crank 117. The hand wheel an d crank may be connected by a spring-pressed pin 119 when it is desired equally to adjust the ends of the cross-head, and on withdrawal of the spring-pressed pin from the hand wheel, said ends may be adjusted independently as desired.

Next will be described the toggle and clouble eccentric mechanism carried by the crosshead and operable alternately to permit and prevent movement of the embosser-head and embossers away from the dough sheet and toward the cross-head. This mechanism comn'ises' a pair of shoes 121 (Figs. 2, 10 and 11) having pins 123 provided with flat faced collars 125 adapted to slide in guide forks 127 depending from the cross-head. The shoe pins 123 are connected to toggles each comprising a lower link 129 and an upper link 131 pivotally connected to shafts 133 journalled in bearings in the cross-head. The links 129 and 131 have meeting overlapping forked ends through which pass hinge pins 135. The cross-head is formed to provide a box 137 for receiving the toggle and double eccentric mechanism, and at the bottom of the box are openings through which the 10-w- .er limks of the toggles protrude.

The toggles may be adjusted in order that they may be set properly for embossing dough sheets of different thicknesses and for causing the embossers to make impresses in the cough sheet of varying depth. Also, this adjustment enables the toggles of the shoes to be to compensate for any variation in the height of the yokes which connect the cutter and embosser-head unit to the cross-head.

To accomplish this adjustment, the toggle carrying shafts 132, 133 have eccentric portions, and ends thereof extend out from the cross-head and have fast thereon worm gears 1&1 meshing with worms 143 (Figs. 3 and 4), one on a sleeve shaft 145 journalled in bearings on the cross-head and the other on a shaft 147 having a portion-thereof in the sleeve shaft 145. Fast on the sleeve shaft 145 is a hand wheel 1 19, and last on the shaft 147 is a crank 151. The hand wheel and crank may be connected by a spring-pressed pin 153 when it is desired equally to adjust the toggles and shoes, and said pin may be withdrawn from the hand wheel independently to adjust the toggles and shoes as desired.

. The hinge pins 135 of the toggles are connected by connecting rods 155 with a pair of eccentrics 157 (Figs. 5, 10, 11 and 11a) having inner flanges 159 formed integrally therewith, and flanges 161 secured to the eccentrics by screws 163, said connecting rods being held bet-ween said flanges. The eccentrics are mounted fast on a shaft 165 journalled in bearings in the cross-head provided with bushings 167 and 169. On one end of the shaft 165 is a nut 171 engaging a flange on the bushing 169, and on the other end of the shaftis a mitre gear 173 meshing with a mitre gear 175 on a shaft 177 extending parallel to the cross-head and journalled in a bracket 179 secured to the cross-head and in a bracket 18]. (Figs. 3, 6, 7 and 8) secured to the rear trunnion of the crosshead by a fin 183 entered into a corresponding recess in the trunnion and screws 185.

Fast on the rear end of the mitre gear shaft 177 is an arm 187 having a slot 189 therein receiving a slide block 191. A rock arm 193 has one end pivotally connected to the block and its opposite end pivotally mounted on a shaft 195 on the bracket 181. A connecting rod 197 has its upper end pivotally conected to the slide block and its lower end pivotally connected 'to a crank wrist pin 199 on a disk 201 seemed to the crank wrist nin 69 on the main shaft 71 at the rear side of the machine.

The construction is such that on rotation of the disk 201, the connecting rod 197 will operate through the slide block, slotted arm and crank'pin is about to move through an are rock arm to oscillate the mitre gearshafts and the eccentrics, thereby alternately to buckle and straighten the toggles with positive action. r

. The operation may be more readily under I stoodby reference to the diagrammatic Figures 12,13 and 14. F or convenience the line 203'maybe 'regard'edas the upper surface of the dough sheet, the shoe 205 may be considered to represent one of the embossers, and the cutter 207 may be considered to represent one of the cutters. When the embosser'is about to engage the dough sheet, the eccentrics, slotted arm, rock arm, embosser crank pin 199' andcutter crank pins 69 will be in the positions shownin Fig. 12; The embosser to the portion thereof where it is effective to impart highest speed longitudinal movement to the connecting rod 197, and the slide block I in the slotted arm will be still nearer to its shortest-effective radius. The effective radius of the embosser crank pin 199 is now considerably longer than the effective radius of the slide block, and the movement of the former is multiplied at the latter. WVhen the parts are in.their positions shown-in Fig. 13, the embosser is down to its lowest limit and is in engagement with the dough sheet.

Next the eccentrics receive their highest speed rocking movement in order quickly to buckle the toggles and allow the embosser acting springs to move the embosser-head quickly up from the dough sheet. In the course of this movement, the embosser crank pm 199 i and the slide block will move from their positions shown in Fig. 13 to their positions shown in Fig. 14, and it will benoted in Fig. 14 that the slide block has moved outward in the slotted arm toward the end thereof to its position of longest radius. The cross-head continues to move down, thereby causing the cutter to die out the embossed biscuit from the dough sheet; The eccentrics are then rockedin the opposite direction to restore the toggles to their straightened condition in readiness for the next cycle of operations.

When the embosser is in its position shown in Fig. 13 in engagement with the dough sheet, the cutter is about to enter the sheet and will die out. a biscuit directly after the embosser leaves the sheet. It is essential that.

the embosser should leave the sheet before the cutter touches the sheet in order to prevent vacuum efiect in the cutter which would suck upthe dough sheet on rise of the embosser therein; On upward movement of the emits position of shortest efiective radius. I

bosser, the cutterywill clear the dough sheet from the embosser. In Fig. 14: the cutter is v I starting'on its upward movement and will move up beyondthe embosser so that the latter will serve to clear the died out' biscuit from the-cutter; The clearer plate will "clear from the cutter the scrap surrounding the die'dout-biscui't'.

Enormous pressure is brought to-bear upon the embosser-head the instant the embossers contact with the dough sheet, and therefore it is essential that the embosser control mechanism' -shall be of sturdy construction and yet of a design in which parts are sufficiently light to enable high speed operation. .l/Vhen the'embosser-head is under its highest pressure, the toggles are approximately in straightened condition, and through the nearlystraight vertical lines of their links bear the brunt of this pressure. The lateral component transmitted through the connecting rods to the eccentrics is relatively small as compared to the pressure on the toggles,

. Thenjthe slotted 'arm may be swung upward untilits slot is in registration with an eye 209 (Fig.6) on the bracket 181. A pin 211 (Fig. 7) is mounted in the eye and i has a pair'o f circumferential grooves 213 adapted to be engagedby a spring-pressed ball 215, the constructionbeing such that the pin may he slid in the eye so that an end thereof enters the slot 189 of the slotted arm, thereby to hold said arm up in inopertive' position. The spring-pressed ball will enter one of the groovesfto hold the pin in the slot and'enter the other groove to. hold the pin in withdrawn position.

WVhen the machine is used to cut but not emboss biscuits, a cutter unit is substituted for the cutter and embosser unit, and is adapted merely to cut'biscuits. The purpose of removing the rock arm and connecting rod isto relieve the togglesand their actuating mechanism from idle motion andconsequent wear.

While themachine has been described more particularly in respect to embossing and'cutting out biscuits from a dough sheet, other is'not limited to the specific embodiment shown, and that various deviations may be ill,

made therefrom without departing from the spirit and scope of the appended claims.

What is claimed is: a

1. A machine of the character described comprising, in combination, a reciprocable cross-head, means for conducting sheet material beneath the cross-head, an embosser carried by the cross-head and reciprocated thereby toward and from the material,

spring means for retracting the embosser from the material energized on movement of the cross-head toward the material, toggle means on the cross-head operable alternately to permit and prevent movement of the em bosser by said spring means away from the material, and means for positively straightening and buckling the toggle means.

2. A machine of the character described comprising, in combination, an embosser and a cutter adapted to emboss and cutmaterial, a reciprocable cross-head carrying the embosser and cutter, spring means for retracting the embosser from the material energized on movement of the cross-head toward the material, a pair of toggles on the-crosshead operable alternately to permit and prevent movement of the. embosser by said spring means away from the material, a pair of eccentrics on the crosshead, connecting rods connecting the toggles with the eccentrics, and means for operating said eccentrics to cause them alternately to positively straighten and buckle the'toggles.

3. A machine of the character described comprising, in combination, a reciprocable crosshead; a unit carried by saidcross-head having embossers and cutters for acting on sheet material, and spring means for retracting the embossers from the material energized on movement of the cross-head toward the material; toggles on the cross-head operable alternately to permit and prevent movement of the'embossers by said spring means away from the material, and means for positively straightening and buckling the toggles. a

4. A machine of the character described comprising,in combination, a cross-head, embossers carried thereby for embossing material, means for retracting the embossers from the material energized on advance of the cross-head toward the material, toggles carried by the cross-head operable to render the retracting means efiective to withdraw the embossers from the material on completion of the embossing operation, eccentrics on the cross-head, connecting rods connecting the toggles with the eccentrics, and means for oscillating the eccentrics alternately to positively straighten and buckle the toggles.

5. A machine of the character described comprising, in combination, a reciprocable cross-head, an embosser-head carried thereby having embossers tor embossing material, spring means operable on the embosser-head to retract the embossers from the material and energized on advance of the embosser-head toward the material, toggles carriedby the cross-head having shoes for engagement with the embosser-head, eccentrics on the crosshead, and connecting rods extending therefrom to the toggles for positively holding the toggles in straightened condition on advance of the embosser-head toward the material and for positively buckling the toggles to allow the spring means to retract the embossers from the material on completion of th embossing operation.

6. A machine of the character described comprising, in combination, a reciprocable cross-head, embossers carried thereby, spring meansj'or retracting the embossers from the material energized on advance of the crosshead toward the material; and means operable alternately to permit and prevent 1novement of the embossers by the spring means away from the material, including toggles on the cross-head, eccentrics on the crosshead, connecting rods connecting the toggles with the eccentrics, and means for positively oscillating the eccentrics having provision for imparting rapid rocking movements thereto quickly to buckle thetoggles on completion of the embossing operation.

7 A machine of the character described comprising, in combination, a reciprocable cross-head, embossers carried thereby for embossing material, spring means for retractingthe embossers from the material energized on advance of the cross-head toward the material, and means for controlling the embossers including a pair of toggles carried by the cross-head, eccentrics on the cross-head, connecting rods connecting the toggles and eccentrics, and means including a crank motion for oscillating the eccentrics alternately to buckle and straighten the toggles.

8. A machineoi the character described comprising, in combination, a cross-head, embossers carried thereby for embossing material, a shaft having cranks, connecting rods between the cranks and cr0ss-head for reciprocating the latter, spring means for retracting the embossers from the material and energized on advance of the cross-head toward the material, toggles on the cross-head operable alternately to permit and prevent retracting ot the embossers, eccentrics on the crosshead, connecting rods connecting the eccentrics with the toggles, and means operated by one of said cranks for operating said eccentrics to positively buckle and straighten the toggles.

9. A machine of the character described comprising, in combination, a cross-head, embossers carried thereby for embossing material, a shaft having cranks, connecting rods extending between the cranks and the crosshead to reciprocate the latter, spring means for retracting the embossers from the ma:

.l to

, comprising, in combination, a cross-head, em-

terial energized on advanceof the'cross-head toward the material, toggles operable alter natelyto permit and prevent retraction of the embossers from the material, eccentrics on the cross-head,- connecting rods connectingtjhe toggles HIHl'OCCBIltllCS; and means to oscillate the eccentrics including a shaft for the eccentrics, a pair of brackets on the vcrosshead, a rock shaft ournalled insaid'brackets,

intermeshing gears on said shafts, an arm on the rock shaft having a slot, a slide block in said slot, a-disk on one of said cranks having a wrist pin, and a connecting rod connecting the/slide block with the wrist pin. i a

10. A machine of the character described bossers carried thereby forembossing material, a shaft having cranks, connecting rods extending between the cranks and the crosshead toreciprocate the latter, spring means for retracting the embossers from the ma-' terial energizedon advanceof the cross-head towardthe material, toggles operable alternately to permit and prevent retraction of the embossers "from thematerial, eccentrics on thecross-head, connecting rods connecting the toggles and eccentrics; and means to oscillate the eecentrics including a shaft for said slot, a disk on one of said cranks having the eccentrics, a air of brackets on the erosshead, a rockisha ournalled in said brackets, lntermeshlng gears on said shafts, an armon the rock shaft having aslot, a slide block in a wrist pin, a connecting rod connecting the slide block with -thewr1st pin, and a rock arm pivotally mounted on one of said brackets and pivotally connected tothe slide block for controlling variation in the effective radius of the Slide block.

11.1'A machine of the character described comprising in combination'a cross-head embossers carried thereby for embossing material as'haft, means actuated by said shaft for reciprocating thecross-head, means for retraetlng the embossers from the material energ zedon advance of the cross-head toward the material, toggles carried by the cross head,eccentr1cs on the cross-head, connecting rods connecting:thetoggles and eccentrics, and means operated by said shaft for positively actuating the eccentrics to cause the togglesalterna'tely to permit and prevent the retracting means from being effective to with- I draw the embossers from the material.

12; A machine of the character described comprising, in combination, a cross-head having'trunnions, embossers carried thereby for embossing material, a shaft having cranks, connecting rods having lower heads on the cranks and upper heads receiving the crosshead trunnions, spring means for retracting theembossers from the material energized onadvance of'thecross-head toward the material, toggles adapted to be straightenedto prevent the retracting means from withdraw ing theembossers from the material and adapted to be buckled to render the retracting meansefiective, eccentrics von the cross-head, connecting rods connecting the toggles and eccentrics, a shaft for the eccentrics, brackets on the cross-head having bearings, one-of s'aidfbrackets being secured to one of the cross-head trunnions, a shaft journalled in said bearings, intermeshing gears on said shafts, and means' operatedv by the crank shaft for oscillating the gear shafts and ecc'entrics alternately to straighten and'buckle the toggles. v ,7

' 13. A machine of the character described comprising, in combination, a cross-head; a unit carried thereby having ahead carrying cutters and a head carrying embossers for acting on material,and springme'ans for retracting theembossers from the material energized on advance of the cross-head toward the material; tog les carried by the cross-head'having shoes for engagement with the embosser-head, and means for operating the toggles including a pair of eccentrics on "the cross-head,-and a double crank motion for oscillating the eccentrics having a provision for varying the effective radius of one of the cranks, thereby to impart rapid movements to the eccentrics quickly to buckle the togglesand render the embosser retracting means effective oncompletion of the emboss ing operationl o '14. A machine'of the character described a c omprising,in combination, a carrier having,

abed plate, stops on the bed plate, an apron for feeding sheet materal over the bed plate,

a cross-head; a unit carried by the cross-head including a head having embossers, a head having cutters, a stripper plate,and springs supporting the embosser-head on the stripper plate and energized on engagement of the stripper plate with the stops and movementof the cross-head toward t 1e material; tog-V gles carried by the cross-head having shoes for engagement with the embosser-head, ec-

centrics on thecross-head, connecting rods connecting the toggles and eccentrics, and

means; for positively oscillatingthe eccentrics intermittently toibuckle thetoggles and render the embosser springs effective to withdraw the emhossers from the material on completion ofthe embossing operation. r

15. 'A machineof the character described 7 comprising, incombination, a reciprocable cross-head, embossers carried thereby for embossing material, means for retracting the embossers energized on advance of the crosshead toward the material, toggles carried by the cross-head for controlling the embosser retracting means, and means for adjusting the toggles independently to align the same and in unison to vary the depth of the embosser impressions on the material and in accordance with different materials of various thickness. I

16. Ainachine of the character described comprising, in combination, a reciprocable cross-head, embossers carried thereby for embossing material, means for retracting the embossers energized on advance of the crosshead toward the material, shafts on the crosshead having eccentric portions, toggles carried by said eccentric portions, means alternately to straighten and buckle the toggles intermittently to render the retracting means effective to lift the embossers from the ma terial, and means rotatively to adjust said toggle carrying shafts independently to align the toggles and in unison to vary the depth of the embosser impressions on the material and in accordance with different materials of various thickness.

17. A machine of the character described comprising, in combination, a reciprocable cross-head, embossers carried thereby for embossing material, means for retracting the embossers energized on advance of the crosshead toward the material, shafts on the crosshead having eccentric portions, toggles carried by said eccentric portions, means alternately to straighten and buckle the toggles intermittently to render the retracting means effective to lift the embossers from the material, and means rotatively to adjust said shafts, including Worm gears on said shafts,

worms meshing with said gears, a sleeve shaft for one of the worms, a shaft projecting through the sleeve shaft for the other worm.

and means for turning the sleeve shaft and the shaft therein in unison or independently.

18. A machine of the character described comprising, in combination, a cross-head, embossers carried thereby for embossing material, a shaft having cranks, connecting rods connecting the cranks and the cross-head for reciprocating the latter, spring means for retracting theembossers from the material energized on advance of the cross-head toward the material, toggles carried by the crosshead adapted to be straig tened and buckled alternately to prevent and permit lifting of the embcssers from the material by the spring means, eccentrics on the cross-head, connecting rods connecting the toggles and eccentrics, a shaft for the eccentrics, brackets on the cross-head having bearings, a rock shaft journalled in said bearings, intermeshing gears on said shafts, an arm connected to the rock shaft and having a slot therein, a slide block in said slot, one of said bearings located adjacent an end of the cross-head, a rock arm pivotally mounted on said end bracket and pivotally connected to the slide block, a disk on one of said cranks having a wrist pin a connecting rod connecting the wrist pin with the slide block, said rock arm and connecting rod being removable when i the machine is to cut but not emboss, and

means on the end bracket for holding the slotted arm in inoperative position.

gles on the cross-head adapted to control an.

embosser, and means including eccentrics on the cross-head for alternately positively straightening and buckling the toggles.

21. In a machine of the character described, the combination of an apron for feeding sheet material, a reciprocable cross head, an embosser carried by the cross-head for embossing the material; and means for controlling the embosser including toggle means carried by the cross-head and means for positively alternately straightening and buckling the toggle means.

THOMAS LUTHER GREEN. 

